Four of the members of the Kansas City R2 Builders Club: (left to right) Kevin Schwarz, Chris Leffel, Kelly Luck, and Mike Gruhala.

Credit Laura Spencer / KCUR 89.3

Chris Leffel: "I actually work for BNSF Railway, I'm a railroad engineer. I've always been a fan of Star Wars ... Robotics was always my thing, electronics. So I wanted to expand on that, and R2 was the one."

Mike Gruhala: "I've always enjoyed building and drawing, even as a kid. And I was always a fan of Star Wars. And then, after I was working as an architect, I kind of needed a hobby. So I went back to looking at something that I could build that would be a little different than what I work on, you know, from 8 to 5."

Kevin Schwarz: "So I have a couple of friends in the five-oh-first [501st Legion]. And so they build costumes and go to charity events and do things that are Star Wars-related. One of my friends, he had a stormtrooper costume, but he decided that he wanted to build C-3PO. And R2 has always been my favorite character. And I was like, 'You're building 3PO, I have to build R2 (laughs).'"

Kelly Luck: "I'm a computer programmer. I've always been interested in model building and special effects. I was helping some friends of mine who were starting a sci-fi convention. And the local R-2 builders club [was there] ... and I saw that, and I was like, 'Oh, I wish I could do that.' So when Episode VII [The Force Awakens] was announced, I decided, ok, I'm going to start working on one a year before it's released and see if I can get it done in that time. And I managed to do it, and I've been building robots ever since."

Schwarz: "A lot of people ask us if we sell our droids. We're actually not allowed to. We're part of a club ... you're not making a profit on it, because R2-D2 is a licensed character. We build it for fun."

On the challenges of building, from time to materials to costs

A view inside Mike Gruhala's R2-D2. Watching a 'Making of Star Wars' documentary set him on the path of building his own droid.

Credit Laura Spencer / KCUR 89.3

Leffel: "We always tell people: Do not buy a thing, do not do anything until you've done your research. Once they've done that, then it all varies on how much it's actually going to cost because there are several materials that we use now, between resin, 3-D printing, plastic, aluminum, steel."

Schwarz: "I started my droid basically right out of college, so I was going on the cheap route. So most of my droid is made out of plastic, and I did a lot of it myself. I used a razor blade and a straight edge. And that's what my main tool [was] to build my droid. The tools can be very simple as well."

Leffel: "Depending on your material, depends on your costs. Whereas you can spend anywhere from $1,500 to $2,000 on a built starting one, you can spend up to $30,000 making one."

On finishing projects, starting new ones, and never being finished

Kelly Luck shows a work-in-progress, a BB-8, a droid that appeared in the 2015 film 'Star Wars: The Force Awakens.'

Credit Laura Spencer / KCUR 89.3

Schwarz: "I had a budget, but this is a project that basically never ends, so I'm constantly improving, constantly changing what I'm putting on, or taking off."

Gruhala: "I think a lot of us here have our droids "finished," we're just kind of tinkering with them now. It's like anything, you build it and then instead of just sitting there ... you maybe upgrade some stuff. But there are some people in our group here in Kansas City that are still building."

Luck: "Well, I'm working on my current project, which is a BB-8. And I'm trying to have at least the internal support carriage for the driving mechanism set up so that I can actually have it on display and explain how all the moving parts work in time for the Maker Faire."

Few things compare to the satisfaction of building something with your own hands — making things has always been a fundamental part of what humans do. The maker movement embraces these things, and aims to put high-tech tools into everyone’s hands.